diff --git a/apps/desktop/src/App.vue b/apps/desktop/src/App.vue
index ea35af060b..1d5fc5be3e 100644
--- a/apps/desktop/src/App.vue
+++ b/apps/desktop/src/App.vue
@@ -117,6 +117,7 @@ import { restoreGlobalNavigationEntry } from "@/lib/navigation/globalNavigationE
 import {
   isBrowserReloadShortcut,
   isBrowserTaskManagerShortcut,
+  isCloseAllTabsShortcut,
   isCloseOtherTabsShortcut,
   isCloseTabShortcut,
   isCloseWindowShortcut,
@@ -4360,6 +4361,12 @@ async function handleKeydown(e: KeyboardEvent) {
     appTabBarRef.value?.closeOtherActiveTabs();
     return;
   }
+  if (isCloseAllTabsShortcut(e, shortcuts)) {
+    e.preventDefault();
+    e.stopPropagation();
+    appTabBarRef.value?.closeAllTabs();
+    return;
+  }
   if (isDisconnectAllActiveConnectionsShortcut(e, shortcuts)) {
     e.preventDefault();
     e.stopPropagation();
diff --git a/apps/desktop/src/components/layout/AppTabBar.vue b/apps/desktop/src/components/layout/AppTabBar.vue
index 9d03dbcf6e..d076f7d517 100644
--- a/apps/desktop/src/components/layout/AppTabBar.vue
+++ b/apps/desktop/src/components/layout/AppTabBar.vue
@@ -177,7 +177,12 @@ function closeOtherActiveTabs() {
   queryStore.closeTab(activeTabId);
 }
 
-defineExpose({ closeOtherActiveTabs });
+function closeAllTabs() {
+  closeSpecialRegularSurfaces();
+  queryStore.closeAllTabs();
+}
+
+defineExpose({ closeOtherActiveTabs, closeAllTabs });
 
 function handleSaveAndClose() {
   const id = queryStore.saveAndClosePendingTab();
diff --git a/apps/desktop/src/lib/__tests__/editor/shortcutRegistry.spec.ts b/apps/desktop/src/lib/__tests__/editor/shortcutRegistry.spec.ts
index 1d7ef204a8..4a6af32707 100644
--- a/apps/desktop/src/lib/__tests__/editor/shortcutRegistry.spec.ts
+++ b/apps/desktop/src/lib/__tests__/editor/shortcutRegistry.spec.ts
@@ -1,4 +1,5 @@
 import { describe, expect, it } from "vitest";
+import { isCloseAllTabsShortcut } from "@/lib/editor/keyboardShortcuts";
 import {
   closeOtherTabsDefaultShortcut,
   countShortcutConflictPairs,
@@ -291,6 +292,25 @@ describe("shortcutRegistry editor actions", () => {
     expect(normalizeShortcutSettings({ closeWindow: "" }).closeWindow).toBe("");
   });
 
+  it("registers closeAllTabs as an unbound global shortcut that users can assign", () => {
+    const definition = SHORTCUT_DEFINITIONS.find((item) => item.id === "closeAllTabs");
+    expect(definition).toMatchObject({
+      id: "closeAllTabs",
+      labelKey: "contextMenu.closeAllTabs",
+      scope: "global",
+      defaultShortcut: "",
+    });
+    // 无默认键位：保持未绑定状态，由用户在设置里自行分配
+    expect(DEFAULT_SHORTCUT_SETTINGS.closeAllTabs).toBe("");
+    expect(normalizeShortcutSettings({}).closeAllTabs).toBe("");
+    expect(normalizeShortcutSettings({ closeAllTabs: "Shift+Mod+Alt+W" }).closeAllTabs).toBe("Shift+Mod+Alt+W");
+    expect(normalizeShortcutSettings({ closeAllTabs: "" }).closeAllTabs).toBe("");
+    const event = { key: "w", shiftKey: true, metaKey: true, altKey: true };
+    // 显式分配后生效；默认未绑定时永不触发
+    expect(isCloseAllTabsShortcut(event, { closeAllTabs: "Shift+Mod+Alt+W" }, "MacIntel")).toBe(true);
+    expect(isCloseAllTabsShortcut(event, {}, "MacIntel")).toBe(false);
+  });
+
   it("normalizes custom, cleared, and invalid modifier-only shortcuts", () => {
     expect(normalizeShortcutSettings({ openDataInNewTab: "Shift" }).openDataInNewTab).toBe("Shift");
     expect(normalizeShortcutSettings({ openDataInNewTab: "" }).openDataInNewTab).toBe("");
diff --git a/apps/desktop/src/lib/editor/keyboardShortcuts.ts b/apps/desktop/src/lib/editor/keyboardShortcuts.ts
index 6a6f5b0224..121d3c32c3 100644
--- a/apps/desktop/src/lib/editor/keyboardShortcuts.ts
+++ b/apps/desktop/src/lib/editor/keyboardShortcuts.ts
@@ -188,6 +188,10 @@ export function isCloseOtherTabsShortcut(event: ShortcutLikeEvent, shortcuts?: P
   return matchesShortcut(event, actionShortcut("closeOtherTabs", shortcuts), platform);
 }
 
+export function isCloseAllTabsShortcut(event: ShortcutLikeEvent, shortcuts?: Partial<ShortcutSettings>, platform = globalThis.navigator?.platform || ""): boolean {
+  return matchesShortcut(event, actionShortcut("closeAllTabs", shortcuts), platform);
+}
+
 export function isCloseWindowShortcut(event: ShortcutLikeEvent, shortcuts?: Partial<ShortcutSettings>): boolean {
   return matchesShortcut(event, actionShortcut("closeWindow", shortcuts));
 }
diff --git a/apps/desktop/src/lib/editor/shortcutRegistry.ts b/apps/desktop/src/lib/editor/shortcutRegistry.ts
index 9a44287ca8..352b8bb793 100644
--- a/apps/desktop/src/lib/editor/shortcutRegistry.ts
+++ b/apps/desktop/src/lib/editor/shortcutRegistry.ts
@@ -52,6 +52,7 @@ export type ShortcutActionId =
   | "openSettings"
   | "closeTab"
   | "closeOtherTabs"
+  | "closeAllTabs"
   | "closeWindow"
   | "focusSearch"
   | "quickOpen"
@@ -477,6 +478,14 @@ export const SHORTCUT_DEFINITIONS: ShortcutDefinition[] = [
     scope: "global",
     defaultShortcut: closeOtherTabsDefaultShortcut(),
   },
+  {
+    // VS Code's close-all-tabs chord (Cmd/Ctrl+K W) needs chord support the
+    // registry doesn't have, so this action ships unbound and stays optional.
+    id: "closeAllTabs",
+    labelKey: "contextMenu.closeAllTabs",
+    scope: "global",
+    defaultShortcut: "",
+  },
   {
     id: "closeWindow",
     labelKey: "settings.shortcutCloseWindow",